DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A87 Viral meningitis

  • Header · not billable

A87 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Choriomeningitis (acute) (lymphocytic) (serous) → A87.2
  • Chorioencephalitis (acute) (lymphocytic) (serous) → A87.2
  • Lymphocyticmeningoencephalitis → A87.2

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A80-A89 Viral and prion infections of the central nervous system (A80-A89)
  3. A87 Viral meningitis
Billable codes
5
Subdivisions
5
CC / MCC codes
5 / 0
HCC V28 codes
0
New FY2027
0
Index entries
19

Codes in A87

  1. A87.0
    Enteroviral meningitis
    BillableCC
    Inclusion terms 2

    Inclusion terms

    • Coxsackievirus meningitis
    • Echovirus meningitis
  2. A87.1
    Adenoviral meningitis
    BillableCC
  3. A87.2
    Lymphocytic choriomeningitis
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Lymphocytic meningoencephalitis
  4. A87.8
    Other viral meningitis
    BillableCC
  5. A87.9
    Viral meningitis, unspecified
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At A87

Excludes1

  • meningitis due to herpesvirus [herpes simplex] (B00.3) B00.3
  • meningitis due to herpesvirus [herpes simplex] (B00.3) B00.3
  • meningitis due to measles virus (B05.1) B05.1
  • meningitis due to mumps virus (B26.1) B26.1
  • meningitis due to poliomyelitis virus (A80.-) A80
  • meningitis due to zoster (B02.1) B02.1

Notes that also apply

Block A80-A89 instructions (Excludes1 3): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Chorioencephalitis (acute) (lymphocytic) (serous) → A87.2
  • Choriomeningitis (acute) (lymphocytic) (serous) → A87.2
  • Coxsackie (virus) (infection)meningitis (aseptic) → A87.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)coxsackievirus → A87.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)echovirus → A87.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)enteroviral → A87.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)adenoviral → A87.1
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)lymphatica → A87.2
  • Lymphocyticchorioencephalitis (acute) (serous) → A87.2
  • Lymphocyticchoriomeningitis (acute) (serous) → A87.2
  • Lymphocyticmeningoencephalitis → A87.2
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)lymphocytic (acute) (benign) (serous) → A87.2
  • Meningoencephalitislymphocytic (serous) → A87.2
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)arbovirus → A87.8
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)viral NEC → A87.9
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)enterovirus → A87.0
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)adenovirus → A87.1
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)viral disease NEC → A87.8
  • Infection, infected, infective (opportunistic)virus, viral NOScentral nervous systementerovirus NECmeningitis → A87.0

NCHS Alphabetic Index. Index first, then the Tabular List.

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